Blacking mixture



UNITED STATES A IATENT OFFICE.

JOHN G. DREW, OF LYNN, MASSACHUSETTS.

BLACKING MIXTURE.

SPECIFICATION forming part of Letters Patent No. 417,910, dated December24, 1889.

Application filed August 29, 1888- Serial No. 284,066. (Specimens) Toall whom it may concern:

Be it known that I, JOHN G. DREW, of Lynn, county of Essex,andCommonwealth of Massachusetts, have invented a certain Improved BlackingMixture, for use on shanks and heels and bottoms of boots and shoes; andI have fully and accurately described the same'in the followingspecification. y

This mixture is designed for use on the surface of shoe shanks, heels,and bottoms as a substitute for the burnished finish now commonlyimparted to said surfaces. To this endI take of water one gallon anddissolve therein six ounces of borax andtwo and one-half pounds ofgum-shellac. To this I add a proper and elfective quantity-gene1allyabout one tea-spoonf ulof oil of sassafras,which removes the bubble leftby the union of the shellac and borax with the Water and givesa brightfinish to the mixture as applied. I blacken this mixture by addingthereto two ounces of arefined quality of aniline-black, known to thetrade as Nigrosine. It may be reddened by adding a solution of logwood,and it is better to add a little aqua-ammonia of the usual strength toset the color.

The mixture is applied, by means of a brush or other suitable spreadingdevice, to the surface of the leather composing the boot or shoe shank,heel, and bottom. It is allowed to dry thereon and presents afinish verymuch like the usual burnished surface.

The above-stated quantities of materials "employed are substantiallywhat give the best JOHN G. DREW.

\Vitnesses:

GEO. I-I. WILLIAMs, C. B. TUTTLE.

